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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */ |
| 2 | #include |
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| 3 | #include |
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| 4 | #include |
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| 5 | |||
| 6 | size_t fread(void *vptr, size_t size, size_t count, FILE *iop) |
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| 7 | { |
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| 8 | char *ptr = (char *)vptr; |
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| 9 | int s; |
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| 10 | int c; |
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| 11 | |||
| 12 | // __libclog_printf("fread(%x,%u,%u,%x)\n",vptr,size,count,iop); |
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| 13 | |||
| 14 | s = size * count; |
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| 15 | while (s > 0) { |
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| 16 | if (iop->_cnt < s) { |
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| 17 | if (iop->_cnt > 0) { |
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| 18 | memcpy(ptr, iop->_ptr, iop->_cnt); |
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| 19 | ptr += iop->_cnt; |
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| 20 | s -= iop->_cnt; |
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| 21 | } |
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| 22 | /* |
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| 23 | * filbuf clobbers _cnt & _ptr, |
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| 24 | * so don't waste time setting them. |
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| 25 | */ |
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| 26 | if ((c = _filbuf(iop)) == EOF) |
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| 27 | break; |
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| 28 | *ptr++ = c; |
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| 29 | s--; |
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| 30 | } |
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| 31 | if (iop->_cnt >= s) { |
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| 32 | memcpy(ptr, iop->_ptr, s); |
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| 33 | iop->_ptr += s; |
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| 34 | iop->_cnt -= s; |
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| 35 | return count; |
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| 36 | } |
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| 37 | } |
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| 38 | return size != 0 ? count - ((s + size - 1) / size) : 0; |
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| 39 | } |